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chromium/third_party/blink/web_tests/css-parser/unclosed-open-brackets-crash.html 

<!DOCTYPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<script>
test(() => {
    document.documentElement.style = 'content: ' + '('.repeat(60000) + '";';
}, 'This test passes if it does not crash.');
</script>